I had argument with my co-workers. I insisted (and my Enlish teacher too ) that if I use the word "already" then it have to be present perfect.
So I said the sentence have to be next:
"Account has already existed in ...."

They said to me that it's wrong and it have to be:
"Account already exists in...."

already1 before now, or before a particular time:The design of the new house is similar to those that have already been built.The performance had already started when we arrived.

2 used to say that something has been done before and does not need doing again:You already told me that.'Fancy a coffee?' 'No thanks, I already have one.'

3 used to say that something has happened too soon or before the expected time:Have you eaten all that food already?Is it 5 o'clock already?

4 used to say that a situation exists and it might get worse, greater, etc:Hurry up, we're already late.

Extra dictionary examples"Do you want a cup of coffee?" "No thanks, I already have some.""Should I tell Kay?" "She already knows.""When are you going to do your homework?" "I already did it before dinner!"Are you leaving already?As I have already mentioned, we need to raise more political support.Don't buy any more toys for the kids -- they've got plenty already.He's only three and he's already reading.I can't believe I already forgot his phone number!Is it already 5 o'clock?The building's already costing us way too much money as it is.The show has already started.Was the apartment empty when you moved in or was it already furnished?Sentences from books, newspapers, etc.As many teams already know, it is one of the kinder road stops in the league.By the early 1950s the claim that agriculture saved valuable foreign exchange was already paper-thin.I knew already how everything would end up.She wondered if during that last frenetic occasion when she had seen Sylvie there had already been a premonition of the end.This is a challenge which I and my colleague John Davis have already taken up.This is a crucial proposition which we have already noted and which will be discussed again later in this book.This is especially true if you introduce your spouse into an already established business partnership.